introduction to dynamodb

ArticleDirectory Data Model concept-tables, items, and attributes Primary Key-primary key Dynamodb Data Type Data Model concept-tables, items, and attributes A dynamodb database consists of tables, data items (items), and attributes (attributes. A database has several tables, a table has several items, and each data item has several attributes. In a relational database, a tables consis

In Dynamodb, database is a collection of table, and table is a collection of item, and item is a collection of attribute. attribute is name-value right. Value can be a single-valued property or a multivalued property (collection). The size of an item cannot exceed 64KB. You get started by understanding this.In addition, DYNAMODB proposes the idea of a two-level index to support richer queries , you can crea

Tags: style blog http color using OS IO dataDYNAMODB's data is stored on SSDS (solid state Drives, SSDs), which can store and access data of any size within the predicted low latency response time, while SSDs also have high I/O performance to handle large-scale request workloads. Let's take a look at the inappropriate usage scenarios for DYNAMODB: If you need to store large amounts of data, but the data is often accessed very low,

flexible data model and reliable performance make it the perfect choice for mobile, Web, gaming, advertising technology, the Internet of things, and many other applications. 　　 If you're using DYNAMODB, you'll need to create a Dynamodb instance in Amazon. Hey, it's all money. Although the study is to cost, but this cost is a bit high. Amazon also comes up with this problem, so it provides a

Tags: daily capacity large number of scene mode shopping cart economic bidding copy Dynamodb is a fully managed NoSQL database service. Customers can easily use Dynamodb's services. Enjoy high performance, massive scalability and persistent data protection at the same time. The Dynamodb database was published by Amazon on January 18, 2012.It incorporates Amazon's many years of experience in large, non-rela

Tags: building tables table Note Reliable GUID throws exception add border TPSWhat is DynamodbAmazon DYNAMODB Distributed NoSQL Database service supports dynamic scaling and reliable performanceDynamodb basic concept of dynamodb composition Table: Represents the table used to store dynamodb data, similar to a relational database Items: The table can

January 18, 2012, Amazon released Amazondynamodb, a fully managed, high-performance, high-reliability, cost-effective NoSQL database. Dynamodb is ideal for Internet-scale applications.The DYNAMODB database incorporates Amazon's many years of experience in large, non-relational databases and cloud computing. As early as 2007, Amazon published a paper that delves into the design concepts and implementation te

Tags: style blog http color using OS strong fileAmazon Dynamodb is rapidly becoming the world's strongest game database. "Fruit Ninja" (developed by Halfbrick Studio), "Battle Camp" (developed by Pennypop) and other games take full advantage of Amazondynamodb's one-click Extensibility features to support the rapid development of the game, to provide services to millions of players worldwide. Amazondynamodb is also appreciated by a number of developers

This section if you have already exported data from Dynamodb, and the exported files are stored in S3. 文件内部结构会在 Verify Data Export File describes the narrative.we call the original table of the previously exported data as sourcetable, and the table to which the data will be imported is destinationtable. You can import an export file from S3 into a table in Dynamodb. But first make sure that the following c

Tags: AWS Dynamodb s3 Import This section assumes that you have exported data from Dynamodb, and that the exported files are stored in S3. 文件内部结构会在 described in Verify Data Export File. we call the original table of the previously exported data as sourcetable, and the table to which the data will be imported is destinationtable. You can import an export file from S3 into a

DynamoDB, amazondynamodb I originally wanted to write processes, threads, lightweight threads, goroutine, and coroutine. Why do I list goroutine separately because it is not a coroutine and all translation into coroutine is a concept of stealing, calls coroutine, Which is lighter than a thread. Forget it. Don't worry about it. Today I want to write DynamoDB and record my experiences. As described on the off

This section describes how to export data from one or more dynamodb tables to S3 buckets. Before you perform the export, you need to create S3 buckets in advance.NoteIf you haven't used AWS Data Pipeline before, you'll need to create two IAM roles before executing the process below. For more information, please visit creating IAM Roles for AWS Data Pipeline.export data from Dynamodb to S3 Log in to the

Tags: information application rom creat AWS Evel splay rules DynamodbThis section describes how to export data from one or more dynamodb tables to S3 buckets. Before you run the export, you need to create S3 buckets in advance. NoteAssuming you haven't used AWS Data Pipeline before, you'll need to create two IAM roles before running the following process. For a lot of other information, please go to Creating IAM Roles for AWS Data Pipeline.export data

Tags: style blog http color using IO data arToday we look at Dynamodb's design ideas.Dynamodb primarily wants to achieve high availability (availability) because of the CAP theory, so only consistency is sacrificed, but eventual consistency is achieved. It also wants to achieve the goal of high scalability (scalability), which facilitates horizontal scaling, meaning that high availability and high scalability are the two goals that Dynamodb has to ach

Python -- boto3: basic interaction with dynamoDB, table backup and recovery, and pythondynamodb References: http://boto3.readthedocs.io/en/latest/reference/services/dynamodb.html Recently, I have studied dynamoDB in boto3 due to work needs. I would like to summarize my experiences here. First, install boto3 and run it on a machine with python and pip installed. sudo pip install boto3 Boto3 provides the f

Reference: http://boto3.readthedocs.io/en/latest/reference/services/dynamodb.html Recently, due to work needs, the study of Boto3 in the Dynamodb part, a little experience, in this summary. The first is the installation of Boto3, which runs on a machine with Python and Pip sudo pip install Boto3 In the official website document, BOTO3 provides the following interfaces to interact with DYNAMODB: Batch_get_

Reference: http://boto3.readthedocs.io/en/latest/reference/services/dynamodb.htmlRecently, due to work needs, the study of Boto3 in the Dynamodb part, a little experience, in this summary.The first is the installation of Boto3, which runs on a machine with Python and Pipsudo Install Boto3 In the official website document, BOTO3 provides the following interfaces to interact with DYNAMODB:Batch_get_item () Batch_write_item () can_paginate () create_tab

Golang call the AWS SDK when prompted:ACCESSDENIEDEXCEPTION:USER:ARN:AWS:STS::818539432014:ASSUMED-ROLE/BJ-DEVELOP/I-787F1CDC isn't authorized to Perform:dynamodb:PutItem on Resource:arn:aws:dynamodb:xxx:818539432014:table/tablename_testStatus code:400, Request ID:TGNDJ7QEEGNUB2C4TIB8CI3HOBVV4KQNSO5AEMVJF66Q9ASUAAJGThis occurs because the config file is not read in the environment variable.Use the AWS Configure command to configure the corresponding ID and key and region.Reference: Http://docs.a

recorder Remote Control Protocol ".1.1. Introduction to RTSP To implement the RTSP control function, not only the protocol, but also the media player and Media Server ). The relationship between media servers and media players is the relationship between servers and customers. The biggest difference between a media server and a common web server is that a Media Server supports stream audio and video transmission, therefore, you can download and play

, RTSP does not bind RTP. The ability to reuse HTTP has benefits in at least two ways: security and proxy. Because the requirements are very close, it is valuable to use HTTP functionality on caches, proxies, and authorizations. 1. Live Streaming Protocol RTSP RTSP[3] Protocol works as a client server, a multimedia playback control protocol that enables users to control the playback of real-time data (audio and video streams) downloaded from the Internet, such as pause/resume, rewind, forwar